vacant - empty, not being used⏎
sample - tester, taste, example, small amount⏎
zenith - summit, top, peak⏎
stipulate - state clearly, demand, specify⏎
warranty - guarantee, security⏎
upkeep - maintenance, preservation⏎
vision - concept, idea, notion, plan, scheme, shape, dream, aspiration, ambition, wish, thought, intent, intention⏎
scale - range, spectrum, measure, gauge⏎
tender - bid, offer⏎
smart - intelligent, clever, advanced (technology)⏎